`#host` and `#lxc-net` are visual sidebar section headers for the
Storage Share Manager page — they group their submenu items in the
sidebar tree but point back at the parent Overview with an anchor,
so they aren't standalone docs the reader advances to. Including
them in the flat Previous/Next sequence produced two regressions:
* On `/docs/storage-share/#host` the Next button targeted `#host`
again, so clicking it didn't move. The earlier hash-tracking fix
intended to catch this, but a `useEffect` with an empty dep array
only runs on mount — and Next.js Link navigations don't fire
`hashchange` when the path changes too, so a cross-page navigation
that lands on `#host` (sidebar click) rendered with hash="" and
re-collapsed to the section header.
* On `/docs/storage-share/lxc-mount-points/` the Next button pointed
at `#lxc-net` instead of advancing to `lxc-nfs-client`, since the
section header sat between the two real pages in the flat list.
Filter out any sidebar entry whose href contains `#` at walk time so
the flat list only carries real pages. With them gone, an anchored
URL collapses to its parent Overview and Next walks straight into
the first subpage. The hash effect + state are no longer needed so
the component drops them, keeping only the pathname-based match.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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